CN103386877A - Hybrid power vehicle and operation method thereof - Google Patents
Hybrid power vehicle and operation method thereof Download PDFInfo
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- CN103386877A CN103386877A CN2013101650303A CN201310165030A CN103386877A CN 103386877 A CN103386877 A CN 103386877A CN 2013101650303 A CN2013101650303 A CN 2013101650303A CN 201310165030 A CN201310165030 A CN 201310165030A CN 103386877 A CN103386877 A CN 103386877A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007858 starting material Substances 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 description 12
- 230000000994 depressogenic effect Effects 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 230000004087 circulation Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18027—Drive off, accelerating from standstill
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/006—Starting of engines by means of electric motors using a plurality of electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
- F02N11/0822—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to action of the driver
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/46—Engine start hydraulic or electric motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
- Y10S903/904—Component specially adapted for hev
- Y10S903/905—Combustion engine
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A hybrid power vehicle and an operation method thereof are provided. A disconnect clutch selectively separates an electric machine from a combustion engine. If a wide open throttle or high torque command is requested and the combustion engine is shut down, a 12 volt starter may be used to start the combustion engine while disconnected from the electric machine and all of the electric machine torque available may be used for traction.
Description
Technical field
The disclosure relates to and has cooperation with combustion engine that the moment of torsion that drives vehicle is provided and vehicle and a kind of control algorithm that uses self-starting motor or traction motor fire an engine of traction motor.
Background technology
Vehicle manufacturer is developing motor vehicle driven by mixed power, to meet the demand to the higher vehicle of fuel efficiency.A kind of structure of motor vehicle driven by mixed power can be called as the design of modularization hybrid power transmission system (MHT) vehicle.In the MHT vehicle, motor is between traditional multidrive and driving engine.Motor is attached to change-speed box pump impeller or input shaft.Driving engine uses specific " cut-off clutch " optionally with change-speed box, to separate.Cut-off clutch allows vehicle under pure Electronmotive Force pattern, under hybrid mode or driven under pure engine mode, under hybrid mode, motor and driving engine be propelled vehicles both, and under pure engine mode, vehicle only advances by driving engine.
Can be by killing engine to realize the better fuel economy of driving engine when vehicle is slowing down or restart vehicle when chaufeur is depressed accelerator pedal or " step on the accelerator ".When the brake application device was caught vehicle energy, driving engine can separate with change-speed box and can start regenerative brake.
A problem of MHT vehicle is: in the situation that there is no driving engine, motor may not provide the additional torque of request.For example, when in the situation that in regenerative brake or when vehicle stop and tail-off and while separating chaufeur to need moment of torsion to increase (perhaps extreme, the driver requested throttle of opening greatly) time, driving engine has to restart fast, so that suitable moment of torsion to be provided, meets the demand of chaufeur to moment of torsion.
Under normal circumstances, driving engine is in the situation that the application cut-off clutch passes through electric motor starting.Use the electric motor starting driving engine need to make a part of Motor torque be used for engine restarting, this further slows down or has postponed vehicle launch.
The disclosure is devoted to address the above problem and the other problems relevant with motor vehicle driven by mixed power of summarizing below.
Summary of the invention
Usually start the driving engine of the vehicle with MHT structure by applying cut-off clutch and driving engine being connected to motor.The MHT vehicle also is equipped with the 12V starter, and the restriction high-tension battery moves or when the electricity driving can not move in addition, often uses described 12V starter if high-tension battery exhausts or ambient temperature is very low.Described starter seldom is used to engine starting outside these situations.
Because one of limitation of the vehicle of MHT configuration is the durability of actuating motor, so motor is generally used for fire an engine.The expectation driving engine will experience and surpass 1,000,000 startings at the motor vehicle driven by mixed power life period.The life expectancy of conventional starter is 100,000 circulations, and the life expectancy of the starter of improvement (special for to stop/start system design) is to circulate for 300,000 times.Fire an engine needs enough moments of torsion, and described moment of torsion is not used in vehicle propulsion.According to the type of driving engine, fire an engine and cut-off clutch is engaged to its complete torque capacity can spends 600 to 900msec.When tail-off and cut-off clutch separates and chaufeur during by the demanding acceleration/accel of ruthless pedal, restart driving engine and bother very much.
In the disclosure, vehicle control device receives incoming signal and receives chaufeur from accelerator pedal needs moment of torsion.If chaufeur needs moment of torsion to surpass particular calibration threshold value moment of torsion, all moments of torsion of motor will be for propelled vehicles.Then, driving engine can use the 12V starter to restart.Engine speed increases and orders engine speed to mate motor speed.When engine speed with respect to motor speed in calibration range the time, the application cut-off clutch.
The driving torque of optimization is provided by the vehicle that is in hybrid mode, and under hybrid mode, motor and driving engine be all operations both.When driving engine will restart, if chaufeur needs moment of torsion less than threshold value, motor was used for restarting driving engine.(for example, open greatly throttle) when having high chaufeur torque demand,, because only with 12 volts of starters, restart driving engine, do not consider the durability of starter.
One side according to the disclosure, a kind of hybrid vehicle powertrain systems equipment is provided, when the moment of torsion outside amount of the claim and engine stop, hybrid vehicle powertrain systems equipment makes the torque maximization that can be used for providing traction from motor, simultaneously fire an engine.Described equipment comprises the driving engine that can stop increasing fuel efficiency.Driving engine has and is independent of motor and the starter of moment of torsion with fire an engine is provided.Multidrive and motor are operably connected between driving engine and change-speed box.Motor optionally is connected to driving engine by power-transfer clutch.Adopt moment of torsion to need requesting service to provide moment of torsion to need request signal.Controller receives moment of torsion to be needed request signal and when engine stop and moment of torsion need request signal greater than predetermined value, described engine starting signal is offered starter, perhaps work as engine stop, application power-transfer clutch and moment of torsion offer motor with described engine starting signal while needing request signal to be less than or equal to predetermined value.
According to the other aspect of the disclosure, the torque command requesting service can be accelerator pedal, and accelerator pedal comprises the pedal position sensor that pedal position signal is offered controller.Described equipment also can offer motor speed signal and the engine rotational speed signal of controller, when the difference of motor speed signal and engine rotational speed signal is in calibration threshold value, and controller application power-transfer clutch.After the application power-transfer clutch, can pass through controller monitoring motor tach signal and engine rotational speed signal, and controller increases by the power-transfer clutch applied pressure, with lock-up clutch.Before actuating motor started, controller can send to motor with torque peak application signal.
According to the disclosure on the other hand, disclose a kind of method for the operation vehicle, described vehicle has the motor between change-speed box and driving engine.Motor is connected with driving engine and is connected power-transfer clutch with driving engine and connects by optionally connecting motor.Vehicle can have accelerator pedal, and accelerator pedal comprises the pedal position sensor that pedal position signal is provided.When motor operation and engine stop, pedal position signal is offered controller.Actuating motor is set with when pedal position signal fire an engine during greater than threshold value.Engine speed is increased in calibration range with respect to motor speed, and when engine speed is in the scope of calibration, the application power-transfer clutch.
, according to the other aspect of disclosed method, when pedal position surpasses minimum threshold, pedal position signal is offered controller.Described method also can comprise and obtain motor speed signal, engine rotational speed signal, and when motor speed signal and engine rotational speed signal difference each other are in the calibration threshold value scope, applies power-transfer clutch.After the application power-transfer clutch, monitoring motor tach signal and engine rotational speed signal, increase by the power-transfer clutch applied pressure, with lock-up clutch.Before actuating motor starts, torque peak application signal is offered motor.
According to the disclosure on the other hand, disclose a kind of system of the driving engine for the starting vehicle, described vehicle has the motor that optionally is attached to driving engine by power-transfer clutch.Described system comprises: engine control module; Pedal position sensor, offer engine control module with pedal position signal; Actuating motor, start by engine control module based on pedal position signal.When in the preset range of engine speed at motor speed, engine control module sends to power-transfer clutch with power-transfer clutch application signal, with the application power-transfer clutch.
When pedal position surpassed minimum threshold, pedal position sensor can offer engine control module with pedal position signal.Motor speed signal and engine rotational speed signal compare each other, and when the difference of motor speed signal and engine rotational speed signal is in the calibration threshold value scope, the application power-transfer clutch.After the application power-transfer clutch, but monitoring motor tach signal and engine rotational speed signal increase by the power-transfer clutch applied pressure, with lock-up clutch.Before actuating motor started, engine control module can send to motor with torque peak application signal.
According to following detailed description and the accompanying drawing of the embodiment that illustrates of the present disclosure, above-mentioned aspect of the present disclosure and other aspects will be better understood.
Description of drawings
Figure 1A is the schematic diagram for the modularization hybrid power transmission system of the motor vehicle driven by mixed power that does not comprise tor-con;
Figure 1B is the schematic diagram be used to the alternate embodiment of the modularization hybrid power transmission system of the motor vehicle driven by mixed power that comprises tor-con;
Fig. 2 is the diagram of circuit that as required moment of torsion control to be used for the algorithm of the starter of combustion engine or motor;
Fig. 3 is that the curve by several vehicle operating parameters of the engine starting program impact of using motor represents;
Fig. 4 is that the curve by several vehicle operating parameters of the engine starting program impact of using engine primer represents.
The specific embodiment
The detailed description of embodiment shown in the present invention below is provided.Disclosed embodiment is can be with the example of the present invention of multiple and alternative form enforcement.Accompanying drawing is unnecessary proportionally to be drawn.Can exaggerate or minimize some features to show the details of specific features.The concrete structure that discloses in this application and functional details should not be interpreted as restriction, and are only used for instructing those skilled in the art how to implement representative basis of the present invention.
, with reference to Figure 1A and Figure 1B, show in schematic form modularization hybrid power transmission system 10.Driving engine 12 is operably connected to starter 14, carrys out fire an engine 12 with this starter 14 when the needs additional torque.Motor 16 or motor are operably connected to transmission system 18.In transmission system 18, be provided with cut-off clutch 20 between driving engine 12 and motor 16.Also be provided with multidrive (step shift geared automatic transmission) 22 or gear case on transmission system 18.Offer change-speed box 22 from the moment of torsion of driving engine 12 and motor 16 transmission by transmission system 18, change-speed box 22 offers wheel 24 with moment of torsion.As shown in Figure 1A, be provided with starting clutch 26A by change-speed box 22, moment of torsion is offered wheel 24 between change-speed box 22 and driving engine 12 and/or motor 16.As shown in Figure 1B, be provided with between change-speed box 22 and driving engine 12 and/or motor 16 tor-con 26B with by change-speed box 22 with moment of torsion to wheel 24.Although removing tor-con is the advantage of the embodiment of Figure 1A, aspect the vibration in the system with tor-con 26B that reduces shown in the embodiment of Figure 1B, the disclosure is also favourable.
Vehicle comprises be used to the Vehicular system of controlling a plurality of Vehicular systems and subsystem controls (VSC), represents by frame 27 generally in Figure 1A and Figure 1B.VSC 27 comprises a plurality of algorithms that are associated in a plurality of controllers that are distributed in vehicle.For example, be distributed between control unit of engine (ECU) 28 and transmission control unit (TCU) 29 for the algorithm of controlling the MHT Power Train.ECU 28 is electrically connected to driving engine 12, is used for the operation of control engine 12.TCU 29 is electrically connected to motor 16 and change-speed box 22 and controls motor 16 and change-speed box 22.According to one or more embodiment, ECU 28 is connected with TCU and connect is used shared bus agreement (for example CAN) intercom mutually and with other controller (not shown), communicate by letter by rigid line (hard-line) vehicle.Although the embodiment that illustrates has described functional two controllers (ECU 28 and TCU 29) that are included in of VSC 27 that are used for controlling the MHT Power Train, but other embodiment of HEV comprise single VSC controller or more than two controllers, to be used for controlling the MHT Power Train.
With reference to Fig. 2, disclosed algorithm be used to making described vehicle 10 operations illustrates by flow process Figure 30 in one embodiment.Algorithm starts at beginning 32 places.At 34 places, the vehicle ready to start, motor 16 is according to the idling rotation, and explosive motor 12 cuts out., at 36 places, read pedal position sensor.Pedal position sensor provides pedal position signal., at 38 places, analyze pedal position signal, to determine that whether pedal position signal is greater than the calibration threshold value signal.At 38 places, if the pedal position request greater than the moment of torsion of calibration threshold value, at 40 places, control order offers motor with the moment of torsion of maximum.Motor 16 provides moment of torsion as early as possible, and does not need to use a part of moment of torsion from motor 16 to carry out cranking internal combustion engine., at 42 places, open the starter of 12 volts, with fire an engine 12.
, at 44 places, by engine speed sensor, monitor engine speed., at 48 places, determine that whether engine speed is greater than the first combustion incident threshold value.If engine speed, greater than the first combustion incident threshold value,, at 50 places, will order engine speed to be arranged to equal motor speed., at 52 places, determine that engine speed is whether in the calibration range of motor speed.Usually, engine speed is preferably in the limited range of with motor speed, mating.When 52 place's rotating speeds mate, at 56 places, the application cut-off clutch, thus explosive motor 12 is connected to transmission system 18., at 58 places, determine that whether the absolute value of difference of motor speed and engine speed is less than calibration threshold value.If the absolute value of the difference of motor speed and engine speed, less than calibration threshold value,, at 60 places, is exerted pressure, with the locking cut-off clutch., at 62 places, complete algorithm.
If the absolute value of the difference of motor speed and engine speed is determined to be equivalent to or greater than calibration threshold value, at 64 places, the cut-off clutch pressure that the system increase applies, increase clutch pressure in circulation, until the absolute value of the difference of motor speed and engine speed is less than calibration threshold value.
If at 38 places, pedal position is not more than calibration threshold value, at 66 places, system determines whether pedal position equals zero, equal zero indication as to indicate chaufeur not depress accelerator pedal indicated of pedal position, and chaufeur does not have requested torque.If pedal position is not in zero, at 68 places, the actuating motor vehicle launch, and can start explosive motor 12 with motor output torque fire an engine.When accelerator pedal is depressed, take-off the brake.In this case, at 70 places, algorithm stops.If at 66 places, pedal position equals zero, at 72 places, system determines whether braking is released.If brake releasedly, controller exports to carry out the actuating motor of wriggling (creep) strategy by increasing gradually moment of torsion.Again, as required, at 74 places, driving engine 12 can use motor 16 startings, and at 76 places, in these cases, algorithm finishes.
, with reference to Fig. 3, with several synchronous meters of engine operating parameter, illustrate and use electric motor starting explosive motor 12.Pedal position is illustrated by line 80.Originally, pedal is not depressed, but then is pressed onto fully and opens greatly throttle or 100% situation.The pedal position line represents the chaufeur torque demand.Motor speed line 82 is in relatively low level at first, but when depressing accelerator pedal, motor is increased to its maximum speed.
At this moment, the cut-off clutch pressure that also can be understood to torque capacity line (torque capacity line) is illustrated by line 84, and cut-off clutch pressure is initially zero, then, along with the motor speed increase is increased to the maximum separation clutch pressure gradually, it is by line 84 expressions.Engine speed by line 86 expression is initially zero, and after section, engine speed slowly starts to increase in the delay time of measuring when pedal is fully depressed.As shown in the figure, in fact, engine speed can the overshoot motor speed, and can need rotating speed to reduce, and synchronizes with motor speed realizing.The moment of torsion that fire an engine needs has reduced the Magnification by the motor speed of line 82 expressions.Motor is illustrated and is at first relative low level by line 88 with engine torque.Combined torque is at first because the loss of machine of torque that is caused by engine starting reduces.Combined torque is also synchronizeed and is reduced with motor speed because needs allow engine speed.Finally, car speed is initially zero or relatively low, then, increases along with the overall increase of total torque, as shown by line 90.
, with reference to Fig. 4, the engine starting program of 12 volts of starters of use is shown, so that the speed of response faster of moment of torsion output when using 12 volts of starters to replace the electric motor starting driving engine to be shown with a series of curves of a series of Similar Broken Lines with shown in Fig. 3.Pedal position is illustrated by line 92, its show by with pedal from zero-pressure to the identical order that provides as shown in Figure 3 as in is provided greatly.Be at first the rotating speed of relative low speed by the motor speed shown in line 94, this rotating speed continues to increase to maximum speed.Cut-off clutch pressure or torque capacity are illustrated by line 96.Cut-off clutch is not combination at first, and still, then, along with driving engine starts starting, cut-off clutch pressure starts to increase.When engine speed starts to reach synchronous speed, as by as shown in line 98 like that, cut-off clutch pressure increases to maximum horizontal fast.Composition motor and engine torque are illustrated by line 100.Line 100 starts to have the low-level moment of torsion from motor.Along with cut-off clutch 20 obtains torque capacity, engine torque is added to Motor torque, and to reach maxim, it is illustrated by line 100.Be depicted as at first zero by the car speed shown in line 102, car speed continues to increase, along with engine speed increases to maxim, car speed increases according to ratio faster, as by as shown in line 102.
Although the above has described exemplary embodiment, and do not mean that these embodiment have described all possible form of invention.On the contrary, the word that uses in specification sheets is illustrative but not determinate, and should be appreciated that, without departing from the spirit and scope of the present invention, can make multiple variation.In addition, the feature of the embodiment of a plurality of enforcements can make up to form the further embodiment of the present invention.
Claims (10)
1. motor vehicle driven by mixed power comprises:
Driving engine, have starter;
Multidrive;
Motor, be operatively coupled between driving engine and described change-speed box by power-transfer clutch;
Controller, when engine stop, when moment of torsion needs request signal to surpass threshold value, described engine starting signal is offered starter, perhaps when applying when power-transfer clutch and moment of torsion need request signal to surpass described threshold value, described engine starting signal is offered motor.
2. motor vehicle driven by mixed power as claimed in claim 1, described motor vehicle driven by mixed power also comprises accelerator pedal, described accelerator pedal comprises the pedal position sensor that pedal position signal is offered controller.
3. motor vehicle driven by mixed power as claimed in claim 1, wherein, when the difference of motor speed and engine speed is in calibration threshold value, controller application power-transfer clutch.
4. motor vehicle driven by mixed power as claimed in claim 3, wherein, after the application power-transfer clutch, by controller monitoring motor rotating speed and engine speed, wherein, controller increases by the power-transfer clutch applied pressure, with lock-up clutch.
5. motor vehicle driven by mixed power as claimed in claim 1, wherein, before starter started, controller sent to motor with torque peak application signal.
6. method that operates vehicle, described vehicle has the motor between change-speed box and driving engine, motor is connected optionally to connect motor is connected power-transfer clutch and connects with driving engine with driving engine, vehicle has accelerator pedal, described accelerator pedal comprises the pedal position sensor that pedal position signal is provided, and described method comprises:
When motor operation and engine stop, pedal position signal is offered controller;
During greater than threshold value, start actuating motor with fire an engine when pedal position signal;
Engine speed is increased in the calibration range of motor speed;
When engine speed is in described calibration range, the application power-transfer clutch.
7. method as claimed in claim 6, described method also comprise when pedal position surpasses minimum threshold, pedal position signal are offered controller.
8. method as claimed in claim 6, described method also comprises:
When the difference of motor speed and engine speed is in calibration threshold value, the application power-transfer clutch.
9. method as claimed in claim 8, described method increase by the power-transfer clutch applied pressure, with lock-up clutch after also being included in the application power-transfer clutch.
10. method as claimed in claim 6, described method also are included in before actuating motor starts, and torque peak application signal is sent to motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/465,358 | 2012-05-07 | ||
| US13/465,358 US9283955B2 (en) | 2012-05-07 | 2012-05-07 | Method and apparatus for starting an engine of a modular hybrid transmission based upon demanded torque |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103386877A true CN103386877A (en) | 2013-11-13 |
| CN103386877B CN103386877B (en) | 2018-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310165030.3A Active CN103386877B (en) | 2012-05-07 | 2013-05-07 | Motor vehicle driven by mixed power and its operating method |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US9283955B2 (en) |
| CN (1) | CN103386877B (en) |
| DE (1) | DE102013104519A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104908571A (en) * | 2014-03-13 | 2015-09-16 | 通用汽车环球科技运作有限责任公司 | Powertrain for a vehicle and a method of assembling the powertrain |
| CN106627567A (en) * | 2015-11-02 | 2017-05-10 | 福特环球技术公司 | Methods and system for starting an engine |
| CN107176158A (en) * | 2016-03-10 | 2017-09-19 | 福特全球技术公司 | The system and method that engine convolution and separate type start in motor vehicle driven by mixed power |
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| CN107054052B (en) * | 2015-12-22 | 2021-12-24 | 舍弗勒技术股份两合公司 | Hybrid powertrain system for use in a hybrid vehicle |
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| CN110382901A (en) * | 2017-03-06 | 2019-10-25 | 标致雪铁龙汽车股份有限公司 | For controlling the method for being connected to the clutch of motor when starting Thermal Motor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103386877B (en) | 2018-01-30 |
| US20130296109A1 (en) | 2013-11-07 |
| US20160144852A1 (en) | 2016-05-26 |
| US9283955B2 (en) | 2016-03-15 |
| DE102013104519A1 (en) | 2013-11-07 |
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